$def with (content)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>Notes</title>
        <style type="text/css">
            body {
                background: #EEE;
                font: 14px/1.5 Trebuchet MS, Arial, Helvetica, sans-serif;
                text-align: center;
                margin-top: 50px;
            }
            .content {
                background: #FFF;
                width: 400px;
                border: 3px solid #CCC;
                border-radius: 5px;
                padding: 10px 20px;
                margin: auto;
                text-align: left;
            }
        </style>
    </head>
    <body>
        <div class="content">
            <h1 style="font-weight:400;"> $:content </h1>
            <p>
                <a href="javascript: history.back();">返回</a> | <a href="/">首页</a>
            </p>
        </div>
    </body>
</html>
